.clearfix::before,
.clearfix::after {
    content: '';
    display: table;

}

.clearfix::after {
    clear: both;
}

/* footer */
.bg-black {
    background-color: black;
}

.mt-fu1 {
    margin-top: -1px;
}

/* footer */
/* 二维码 */
.erweiFather {
    position: relative;
}

.erweiFather:hover .erwei {
    display: block;
}

.erwei {
    position: absolute;
    top: -70px;
    left: 80px;
    display: none;
    width: 123px;
    height: 123px;
}

.erwei img {
    width: 100%;
    height: 100%;
}

/* 二维码end */
.square {
    float: right;
    width: 200px;
    height: 200px;
}

.smallBox {
    display: inline-block;
    width: 10px;
    height: 34px;
    vertical-align: middle;
    background-color: #007bff;
    margin-right: 10px;
}

.text-gray {
    color: #6c757d;
}

.strong {
    font-weight: bold;
}

.top {
    width: 90%;
    height: 300px;
    background-color: pink;
    margin: 0 auto;
    margin-bottom: 10px;
    overflow: hidden;

}

.bg-orange {
    background-color: #fd7e14;
}